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What are the reserved IP addresses? Pages that link to <a href="https://ozoneasylum.com/backlink?for=5852" title="Pages that link to What are the reserved IP addresses?" rel="nofollow" >What are the reserved IP addresses?\

There are a number of reserved IPs for various reasons (note: * is used as the wildcard in the IP address and stand fo any number between 0 and 255):

There are one set of reserved addresses for 'private' networks for each IP address class:

Class A: 10.*.*.*
Class B: 172.16.*.* - 172.31.*.*
Class C: 192.168.*.*

The loopback/localhost address: - although the whole rnage is reserved: 127.*.*.*

The zero addresses can also not be used:


Microsoft APIPA (Automatic Private Internet Protocol Addressing) also reserves a set of IPs:



(Added by: Emperor on Fri 02-Apr-2004)

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